Eyeglasses and the like.



G. W. BAKER.

EYEGLASSES AND THE LIKE.

APPLICATION FILED NOV. 3, 1910.

1,085,522, Patented Jan. 27, 1914.

UNITED STATES PATENT OFFICE.

GEORGE WISTON BAKER, OF WOLLSTONECRAFT, NORTH SYDNEY, NEW SOUTH WALES,

AUSTRALIA.

EYEGLASSES AND THE LIKE.

To all whom it may concern:

Be it known that I, GEORGE WISTON BAKER, a subject of the King of Great Britain, residing at Enuk, Milners Crescent, Wollstonecraft, North Sydney, in the State of v for instance, because they prevent a clear and continuous view ofthe ground.

To obviate the abovedisadvantages, it has been previously proposed to construct b1- focal eye glasses having the lenses adapted to be turned so as to reverse the positions of the lens segments for near and distant vision, but in most cases the bi-focal lenses have been either mounted so that they must benecessarily turned together or placed in secondary frames swiveling on the main frame of spectacles.

This invention relates to the kind of glasses termed pince-nez and having'bi-focal lenses, and it consists in improvements the main object of which is to obviate the use of the secondary or auxiliary frame while allowing each lens to be revolved separately and independently of the other. The lenses are mounted upon a frame in such a Way that each can be rotated or moved so as to bring either the high or lower ower segments or portions of the lenses, or close or distant vision, intothe field of vision, or so that said lenses will focus in a desired direction.

In order that the invention may be readily understood, it will be described by reference to the accompanying drawings, in which Figure 1 represents in elevation apair of pince-nez of bi-focal character; Fig. 2 is a section through part of a lens with a device for rotating the lens attached, and Fig. 3 is part of the lens indicated in Fig. 2.

The same reference numerals indicate corresponding parts in all the figures.

In the drawings, 1 and 2 represent the two Specification of Letters Patent. Application filed November 3, 1910. Serial No. 590,489.

Patented Jan. '27, 1914.

segments ofa bi-focal lens. A bridge or nose piece 3, a pair of nose grasping members and the suitably constructed parts 6 constltute the frame of the eye glasses or spectacles.

The lenses are each attached to a trunnion 4, and the two trunnions work in suitable bearings in the parts 6 of the frame. The

lenses can thus be turned through any desired or convenient angle and retained at such angle by friction in the trunnion bear-' ings so that they will focus downwardly and thus m'lmmize the necessity for bending the head forward to such an extent as would be required where ordinary fixed bi-focal lenses are used; or the lenses may be turned completely over or reversed, as indicated in Fig.

1 so as to bring the close vision segment, or

auxiliary segment, into either its lowered position, as indicated on the one side, or turned up out of the way by reversing the lens as indicated on the other side, in which case when the movement has been completed the whole of the lower part of the lens will ofi'era clear field ofvision from the ground upward to a sufiicient height for all ordinary walking purposes.

The lens on the right hand side of the eye glasses, that-is on the left of Fig. 1, is illus- 'trated in the position it would occupy withthe close vision segment or auxiliary lens, 2, in its lower position, that isconvenient for reading or close vision purposes. When in this position, this segment interferes with the vision by preventing a clear view of the ground or floor from beingobta'ined By, however, turning it over into the position indicated on the left hand side of the eye glasses that .is, on the right of Fi 1, a clear field of vision is at once a orded through the low power or distant vision segment 1 and consequently the'ye lasses or spectacles can be used with per ect comfort and safety for walking about.

To facilitate the rotation or semi-rotation of these bi-focal lenses, a small projection or clip 9 is formed or fitted upon some convenient part of each lens near the periphery thereof. The clip may comprise two oppositely disposed parts 9' and a transverse part 9. adapted to fit a notch 1 formed in the periphery of a lens, and to be suitably the lens as for instance by the lenses in either of the reversed positions indicated on the right and left of Fig. 1. Such means ma consist of one or more spring members or each lens, the spring members 7, 8 being mounted or attached to the parts 6 and formed to clip over the edges of the lenses and to retain them in one or another of the extreme positions. These clip members also afford support to the lenses.

' It will be obvious that the construction of the glasses illustrated can bemodified in various details Without departing from the essential feature of theinvention.

Having thus described my invention and the best means I know of carrying the same into practical efiect,-I claim 1. In combination with a pince-nez 'speccent to the nose grasping members, adapted to retain the lenses in certain of said positions.

' 2. In combination with a pince-nez spectacle frame, a bridge piece and nose grasping members, a plurality of lenses each having sections with different foci, a single trunnion attached to each lens and.adapted to turn in corresponding bearings in the frame, whereby each lens may be independently turned about an axis passing longitudinally through the corresponding trunnion into different adjusted positions, means comprising a projection carried by each lens for turning the lenses about their respective axes, and means mounted on parts of the frame adjacent to the nose grasping members, adapted to retain the lenses in certain of said positions. j

3. In combination with a pince-nez spectacle frame, a bridge piece and nose grasping members, a plurality of lenses each having sections with different foci, a single trunnion attached to each lens and adapted to turn in corresponding bearings in the frame, whereby each lens may be independently turned about an axis passing longitudinally through the corresponding trunnion into dilferent adjusted positions, and spring members mounted on the frame adjacent to the nose grasping members each adaptedto grip a lens and thereby retainit in certain of said positions.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses. I I

I GEORGE WIS'ION BAKER.

Witnesses:

J OSEPHENE LOUISE IMRAY, RAYMOND BRACKLEY STRANGE. 

